jQuery 实现侧边浮动导航菜单效果

                       currentItem = “#” + contentItem.attr(“id”);
                   }                  
               });
               if(currentItem&&currentItem!=$(“#menu”).find(“.current”).attr(“href”)){
                   $(“#menu”).find(“.current”).removeClass(“current”);
                   $(“#menu”).find(“[href=”%20+%20currentItem%20+%20″]”).addClass(“current”);
               }
           });
       });